PULSE
ES
FEED
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← All CVEs
CVE Watch—

CVE-2021-37973

Google Chromium Portals Use-After-Free Vulnerability

CVSS

—

No CVSS

EPSS

11.7%

p96

KEV

YES

Nov 3, 2021

Exploit Today

79

0-100

Published: — · Last modified: —

EPSS · 30d
11.6%EPSS · 30 days11.7%
2026-09-172026-10-15
KEV catalog record

Product

Google / Chromium Portals

Vulnerability

Google Chromium Portals Use-After-Free Vulnerability

Added to KEV

Nov 3, 2021

Remediate by

Nov 17, 2021

Known ransomware use

No

Summary description

Google Chromium Portals contains a use-after-free vulnerability that allows a remote attacker, who has compromised the renderer process, to potentially perform a sandbox escape via a crafted HTML page. This vulnerability affects web browsers that utilize Chromium, including Google Chrome and Microsoft Edge.

Required action

Apply updates per vendor instructions.

Notes

https://nvd.nist.gov/vuln/detail/CVE-2021-37973

Related CVEs

No related CVEs by CWE or product.